<template>
    <div>
                   <!-- 面包屑 -->
        <el-breadcrumb separator="/">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>
<!-- 卡片试图 -->
        <el-card>
  <div id="main" style="width: 800px;height:400px;"></div>
        </el-card>
    </div>
</template>

<script>

import * as echarts from 'echarts'
import _ from 'lodash'
export default {
    data() {
        return {
            // 需要合并的数据
            options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
        };
    },

    created() {
        
    },
    // 此时页面的元素已经被渲染完毕 dom渲染完毕
    async mounted(){
        var myChart = echarts.init(document.getElementById('main'));
        const{data:res} = await this.$http.get('reports/type/1')
        if(res.meta.status!==200){
            return this.$message.error('获取折线图数据失败')
        }

        const result = _.merge(res.data,this.options)

        myChart.setOption(result)

    },      
    methods: {
        
    },
};
</script>

<style lang="less" scoped>

</style>